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jawinick

HX Stomp as Microphone Audio Interface

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Hi All - I had a spare XLR>1/4 TRS adaptor lying around (not an impedance matching transformer), and I plugged my Shure SM58 into the L/Mono of my HX stomp and set the input on global parameters to line. The volume was still VERY quiet and it basically didn't work. I notice on the Main L/R there is an In-Z selector (auto, 10k, 22k, 32k, etc) which I had set to "auto," but there is no option to go down as low as the mic output impedance (150 ohm).

 

Then I started looking on youtube to try and figure out why this wasn't working and found a video that talks about the need for an impedance matching transformer - yeah yeah, I know I prob. should have researched it first.  BUT, I didn't see anything in the manual that said I shouldn't do this and since the mic is a passive device, I would never have considered there would be any risk of damaging the HX stomp.  However, the guy in the video mentions potentially "blowing up your hardware" by NOT using one of those, and that gets me super concerned. Did I bugger-up my HX stomp in some way?!  Man I hope not!  Please help me sleep at night!!!

 

 

 

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4 minutes ago, amsdenj said:

I doubt it. Using the transformer just works better.

 

 

Thank you!  I hope you're right!

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I would set input impedance to at least 10x mic (22K), then try instr level.  I doubt a passive mic puts out line voltage.

 

edit:  Looking at SM58 specs 150 ohms, 300 ohms actual (whatever that means). So, try higher impedance as well.

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